JP2010110694A - Water film formation apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To form a water film with a size large enough to contain a man although the apparatus is simple. <P>SOLUTION: Water spouted downward from a circular aperture part 7 of a water film formation apparatus 3 is guided by a guide 6 which has a circular uneven curved face formed by a circular recessed curved face 6a and a circular projected curved face 6b joined on the outer side of the curved face 6a and having an inflexion face in common with the curved face 6a and scattered just like a water film outward in the radius directions from the outer circumferential rim 9 of the guide 6. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a water film forming apparatus that produces, for example, a healing space by water discharged in a film shape.

  Many types of conventional fountains enjoy the flow of water ejected from the fountain and the dynamic change of water. It can be seen.

  In the “hydrophilic device for customer-collecting structure” disclosed in Patent Document 1, a reservoir is provided on the roof of the structure, and the water from the reservoir passes through an arc-shaped outlet to form a thin film of waterfall. Flow down. The curtain of water formed by the flowing water blocks the outside air and produces a space.

  In the “liquid thin film forming apparatus” disclosed in Patent Document 2, a cylindrical conduit is provided around a core, and a cylindrical channel extending in the vertical direction is formed between them. At the end, an injection port directed obliquely upward is provided. A spherical or bell-shaped liquid film is formed by water ejected from the ejection port. An ornament or the like is disposed inside the liquid film. According to this apparatus, it is said that a liquid film such as a thin transparent film can be formed by reducing the thickness of the liquid film to enhance a person's taste and transparency.

In the “water film forming method and apparatus” disclosed in Patent Document 3, a plane collision object is provided in the flow path of water. Then, water is caused to collide with the plane collision object from above, or water is blown into the plane collision object from below, so that the water is diffused in the radial direction from the plane peripheral edge of the plane collision object, and continuously. It is said that a water film surface falling into a thin film curved surface or a thin film flat surface can be formed.
JP-A-5-239938 (see [Summary]) JP-A-8-117661 (see [Summary]) Japanese Patent Laid-Open No. 10-137645 (see [Summary])

  According to the device of Patent Document 1, it is possible to enjoy the scenery outside through the curtain of water, but since a reservoir is necessary on the roof of the structure and the device becomes large, it should be installed simply Is difficult.

  Moreover, according to the apparatus of patent document 2, although it is said that a liquid film like a thin transparent film can be formed by narrowing a flow-path cross-sectional area toward an injection port, When comprised in this way It is necessary to process the core and the conduit with high accuracy so that the opening width of the injection port is the same all around. If the processing accuracy is low and the opening width is not uniform in the circumferential direction, a liquid film having a uniform thickness or jet diameter cannot be formed all around. In addition, since the device of Patent Document 2 is a device for reducing the thickness of the liquid film, it is thin and transparent when an attempt is made to form a water film such as a dome large enough to accommodate a person. It is difficult to form a liquid film such as a film, and there is a possibility that the water film will be in the form of water droplets due to air resistance.

  Furthermore, according to the apparatus of Patent Document 3, since water is only caused to collide with a plane collision object from above or below, even if the colliding water is not in a turbulent state, it is diffused from the plane collision object. It is difficult to make water into a continuous thin film with the same film thickness. In addition, as described above, since water is merely caused to collide with a plane collision object, even if a water film is formed, the size of the water film is limited.

  The present invention has been made paying attention to such problems, and the object of the present invention is to form a water film such as a dome that is large enough to accommodate a person while being a simple device. It is an object of the present invention to provide a water film forming apparatus that can perform the above-described process.

  In order to solve the above problem, the present invention forms a guide flange integrally on the outer periphery of a flow path forming shaft that forms an annular flow path, and forms a concave curved surface at the boundary between the guide flange and the flow path forming shaft. In addition, a convex curved surface is connected to the concave curved surface on the outer peripheral side of the guide flange via a curved surface, so that water from the annular channel flows into the film shape from the peripheral edge of the convex curved surface through the concave curved surface. It is characterized by comprising.

  According to the present invention, the water discharged from the annular flow path is guided by the convex curved surface through the concave curved surface while maintaining a laminar flow state, and is discharged as a water film by the surface tension outward from the outer peripheral edge of the guide plate. Is done. Accordingly, the water can continuously fall in a parabola and form a water film having a uniform thickness.

  In the configuration of the present invention, it is preferable that a cap for forming an annular flow path in cooperation with the flow path forming shaft is loosely fitted to the tip of the flow path forming shaft. If it does in this way, an annular channel can be appropriately formed in the circumference of a channel formation axis by the guide action of a cap.

  Furthermore, in the configuration of the present invention, it is preferable that the flow path forming shaft is formed by a water discharge nozzle.

  According to the present invention, it is possible to form a water film that is large enough to accommodate a person, for example, while being a simple apparatus.

(First embodiment)
Hereinafter, embodiments embodying the present invention will be described with reference to FIGS.
As shown in FIG. 4, in the hydrophilic device 1, a pole 4 also serving as a water pipe is erected on the ground surface 1 c paved with concrete or paving stone, and the water film forming device 3 is supported on the upper end of the pole 4. ing. Water is supplied to the water film forming apparatus 3 via the supply path 4 a in the pole 4, and the water film 2 is formed by releasing the water from the water film forming apparatus 3. The water film 2 has a dome shape as a whole, and is formed in a size that can accommodate a person M1 standing inside and a person M2 sitting on the chair 1b. And the annular groove | channel 1a is provided in the water fall point so that the water which forms the water film 2 may collide with the ground surface 1c, and may not be scattered around. The water dropped into the annular groove 1a flows from the annular groove 1a to a drain groove (not shown). The supply of water to the water film forming apparatus 3 is performed in a state in which water obtained from a water source such as tap water is pressurized with a pump and the valve is opened, but the illustration and description of the pump and valve are omitted. To do.

The release of water from the water film forming apparatus 3 can be turned on and off by operating a switch 4c provided on the pole 4.
Next, the water film forming apparatus 3 for forming the water film 2 will be described in detail with reference to FIGS.

  As shown in FIG. 1, each of the water film forming apparatuses 3 includes a guide body 6 made of stainless steel, a cap 5 having a bullet shape at the upper end of the guide body 6, and the cap 5 and the guide body 6 are coupled to each other. It is comprised from the support body 10 which does. The upper end of the pole 4 and the guide body 6 are joined by screwing a male screw 4b formed on the upper end portion of the pole 4 and a female screw 6f of the guide body 6.

  The guide body 6 is integrally formed with a water discharge nozzle (hereinafter simply referred to as a nozzle) 6d as a flow path forming axis integrally with an upper portion of a reverse conical base portion 6c, and downward from the tip (upper end) of the nozzle 6d. A disc-shaped guide flange 6e is integrally formed on the outer periphery of the nozzle 6d at a distant position. The nozzle 6d and the guide flange 6e have the shape of a rotating body centered on the axis of the nozzle 6d. A concave curved surface 6a is formed at the boundary between the outer periphery of the nozzle 6d and the inner periphery of the guide flange 6e. On the outer peripheral side of the concave curved surface 6a, a convex curved surface 6b is continuously formed on the upper surface of the guide flange 6e via a curved surface. Here, the variable curved surface refers to a surface in which the curvature continuously changes in order to smoothly connect the concave curved surface 6a and the convex curved surface 6b without forming a boundary line therebetween.

  As shown in FIGS. 2 and 3, the support 10 is positioned between the base shaft portion 10a, the overhang portion 10c formed integrally therewith, the base shaft portion 10a and the overhang portion 10c, and is equally spaced. The three rectifying plates 10b extending radially and the pin portion 10e extending upward from the center of the upper surface of the projecting portion 10c are integrally formed. A male screw 10f is formed at the tip of the pin portion 10e. A step portion 10g for engaging with the tip 6g of the nozzle 6d is formed at the lower portion of each rectifying plate 10b, and a male screw 10h is formed on the side surface of the rectifying plate 10b below the step portion 10g. . Moreover, the lower surface of the rectifying plate 10b is a concave curved surface.

  Then, the male screw 10h of the rectifying plate 10b is screwed into the female screw 6h formed on the upper inner surface of the nozzle 6d, and the stepped portion 10g and the tip 6g of the nozzle 6d are brought into contact with each other, whereby the support 10 is fixed to the nozzle 6d. Removably fixed to.

  The support 10 and the cap 5 are coupled by engaging the projecting portion 10c of the support 10 with an engagement recess 5b formed at the top of the inner surface of the cap 5 and a through hole 5c formed at the center of the cap 5. In this state, the nut 11 is screwed onto the male screw 10f in a state where the pin portion 10e of the support 10 is fitted. In this state, the cap 5 is loosely fitted to the tip of the nozzle 6d.

  A guide curved surface as a continuous reversing guide surface is formed from the lower end of the base shaft portion 10a and the rectifying plate 10b of the support 10 to the lower surface of the protruding portion 10c and the inner surface 5a of the cap 5.

  An annular channel 8 is formed between the inner surface 5a of the cap 5 and the outer periphery of the nozzle 6d, and the opening 7 at the tip (lower end) of the annular channel 8 is from the cross-sectional area of the annular channel 8 on the upper side. It is narrowed down to have a small opening area and is directed to the concave curved surface 6a. Further, the outer peripheral surface of the nozzle 6d has a parabolic cross section. Further, the protruding portion 10c of the support 10 and the inner surface of the cap 5 draw a similar parabola displaced in the axial direction of the nozzle with respect to the parabola on the outer peripheral surface of the nozzle 6d.

Next, the effect | action which the water supplied by raising the supply path 4a of the pole 4 forms a dome-shaped water film is demonstrated.
The water supplied from the supply path 4a of the pole 4 to the nozzle 6d is ejected from the tip of the nozzle 6d. The jetted water is guided to the overhanging portion 10c of the support 10 and the inner surface 5a of the cap 5 constituting the reversing guide surface while receiving the rectifying action of the rectifying plate 10b, and the direction of flow is reversed from upward to downward. Is done. The water facing downward flows through the annular flow path 8 between the nozzle 6d and the inner surface 5a of the cap 5 in a laminar flow state and is discharged from the opening 7 toward the concave curved surface 6a of the guide body 6. The At this time, the outer peripheral surface of the nozzle 6d has a parabolic cross section. Moreover, since the outer peripheral surface of the nozzle 6d, the projecting portion 10c of the support 10 and the inner surface of the cap 5 form a parabola, the water in the annular flow path 8 does not become turbulent and smoothly flows downward. Flowing. Further, since the opening 7 is narrowed, the speed is increased at the opening 7. Then, the water is increased in speed and becomes a high-speed flow, and the water guided by the concave curved surface 6a is changed in the flow direction and becomes obliquely upward. Further, the water reaches the convex curved surface 6b from the concave curved surface 6a and flows outward on the convex curved surface 6b. Then, the water is discharged radially outward from the outer peripheral edge 9 of the convex curved surface 6b, and a water film is formed by surface tension.

Therefore, according to the above embodiment, the following effects can be obtained.
(1) In the above embodiment, the water jetted in a laminar flow state downward from the annular opening 7 of the water film forming apparatus 3 is inclined upward by the concave curved surface 6a of the guide body 6, and then convex. It was made to discharge | release to the radial direction outward from the outer periphery 9 of the guide flange 6e by the guidance of the curved surface 6b. Therefore, unlike the above-mentioned Patent Document 2 in which a thin water film is formed from a narrow injection port and Patent Document 3 in which water is only collided with a plane collision object, a water film in a laminar flow state with an appropriate thickness can be formed. . Therefore, the water film is formed to have a uniform thickness around the entire circumference, avoiding that the water film receives air resistance and is scattered in the form of water droplets or a turbulent water film is formed. And since water is accelerated in the opening part 7, the water film discharge | released and formed from the outer periphery 9 of the guide flange 6e can be formed in the magnitude | size which can accommodate a person well.

  (2) Since the water film forming apparatus 3 is only composed of the three parts of the guide body 6, the cap 5 and the support body 10, the number of parts is small and the structure is simple. Further, since a water film having a uniform thickness is formed by the water discharged from the upper surface of the guide flange 6e, unlike the Patent Document 2, it is not necessary to process the injection port with high accuracy. The processing of the device 3 is easy.

  (3) The hydrophilic device 1 having the water film forming device 3 has a simple configuration in which the water film forming device 3 is supported on the upper end of the pole 4 erected on the ground surface 1c. Therefore, when the water film 2 is not formed, it is possible to provide the hydrophilic device 1 that fits neatly into the surrounding landscape without damaging the surrounding landscape.

(Second Embodiment)
Next, a second embodiment that embodies the present invention will be described with reference to FIGS. 5 and 6 with a focus on differences from the first embodiment.

  As shown in FIG. 6, the hydrophilic device 1 according to the second embodiment is provided on the outer end of the water film 2, for example, on the upper end of a hollow tubular pole 40 erected on the ground surface 1 c outside the annular groove 1 a. A beam portion 40a is formed, and the water film forming apparatus 30 is supported on the beam portion 40a. Although not shown, a switch for turning on / off the formation of the water film 2 is provided in the lower part of the water film forming apparatus 30.

  As shown in FIG. 5, in the guide body 60 of the present embodiment, a guide flange 6e is formed on the outer periphery of the lower end of the flow path forming shaft 61 having a closed top portion 61a. Similarly to the first embodiment, the guide flange 6e is integrally formed with a concave curved surface 6a and a convex curved surface 6b on the outside of the concave curved surface 6a via a curved surface.

  The cap 50 is supported at the tip of the beam portion 40a. The support body 70 that couples the guide body 60 and the cap 50 is formed in a rod shape having an external thread formed at the upper end. The support body 70 is fixed to the top portion 61a of the flow path forming shaft 61 of the guide body 60 by welding. And the guide body 60 is supported in the suspended state by the cap 50 by the nut 11 screwed together with the said external thread.

  As shown in FIG. 5, a plurality of through holes 50 e as water supply ports are formed at equal intervals in the circumferential direction in the upper portion of the cap 50. The beam portion 40a is connected to the outer periphery of the upper portion of the cap 50 at the annular portion 40b at the tip thereof. An annular chamber 40c corresponding to the through hole 50e is formed in the annular portion 40b.

  In the water film forming apparatus 30 configured as described above, unlike the structure in which the water film forming apparatus 3 receives the supply of water from below, the water passes through the passage 40d in the beam portion 40a and reaches the annular chamber 40c. Then, the annular chamber 40c is supplied to the upper part in the cap 50 through the through hole 50e. Then, the water is guided by the annular flow path 8 and flows downward. Since the subsequent water behavior is the same as that in the water film forming apparatus 3 in the first embodiment, the description thereof will be omitted.

And in this 2nd Embodiment, in addition to the effect in 1st Embodiment, the following effects can be acquired.
(4) In the above embodiment, the pole 40 is erected on the ground surface 1c outside the part where the water film 2 is to be formed, and the water film forming apparatus is formed by the beam part 40a extending laterally from the upper end of the pole 40. 30 was supported. Therefore, the inside of the water film 2 can be a space where no structure exists, and the internal space can be used effectively.

(Third embodiment)
Next, a third embodiment embodying the present invention will be described with reference to FIG. 7 with a focus on differences from the first embodiment.

The third embodiment enables instantaneous stop and instantaneous start of water discharge for water film formation.
That is, a storage chamber 71 is formed at the upper end of the pole 4, and a shielding plate 72 is stored therein. A receiving chamber 74 is formed on the opposite side of the storage chamber 71 through the supply path 4a. The shielding plate 72 is moved between a position in the storage chamber 71 and a position where the shielding plate 72 is advanced from the position into the receiving chamber 74 in the direction of the arrow to block the supply path 4a. The A drainage channel 77 is formed outside the pole 4 on the upstream side of the shielding plate 72. A relief valve 75 is provided on the pipe wall of the pole 4 between the drainage passage 77 and the supply passage 4a, and when the water pressure in the supply passage 4a rises, the relief valve 75 acts as an urging force of the spring 76. Opened against it.

  FIG. 7 shows a state in which the shielding plate 72 is in the retracted position, the supply path 4a is opened, and water is discharged for forming a water film. In this state, when water discharge is stopped, the shielding plate 72 instantaneously shields the supply path 4 a by the driving force of the electromagnetic solenoid 73. For this reason, water discharge is stopped instantaneously. At this time, the internal pressure of the supply passage 4 a rapidly rises, but the internal pressure is released by the relief valve 75 being opened and discharged from the drainage passage 77. Thereafter, the valve (not shown) of the supply path 4a is closed.

  When water discharge is started to form a water film, the shielding plate 72 is instantaneously released from the shut-off state by the driving force of the electromagnetic solenoid 73 in a state where the valve is opened and the water pressure in the supply path 4a is maintained. Moved to the open position. Therefore, a water film is instantly formed.

The third embodiment has the following effects.
(5) Since the water film is instantly formed and disappears instantly, it is avoided that the water film expands from a small state or contracts from the expanded state when the water film starts to form and disappears. it can. For this reason, water does not fall into the internal space of the water film formation region, and it is possible to prevent water from splashing on the person or object at that position.

  (6) When the water pressure in the supply channel 4a rises due to the instantaneous stoppage of water discharge by the shielding plate 72, the water pressure is released by opening the relief valve 75, thus preventing the occurrence of a water hammer and damage to the piping system. it can.

(Example of change)
In addition, the said embodiment can also be changed and actualized as follows.
In the embodiment, the caps 5 and 50, the guide bodies 6 and 60 and the supports 10 and 70 constituting the water film forming apparatuses 3 and 30 are all made of stainless steel, but rust-proof iron or iron Use metal or non-ferrous metal.
-Although the number of rectifying plates 10b is three, it should be two or four or more.
-The poles 4 and 40 are erected on the ground surface 1c paved with concrete or the like, but they are erected on the ground surface 1c laid with permeable sand or gravel. In this case, if gravel is not caused to flow due to the fall of the water film, the annular groove 1a can be omitted, and the water can be allowed to flow in a culvert.
In the third embodiment, the instantaneous opening / closing device is provided on the pole 4, but this instantaneous opening / closing device is provided on the water film forming devices 3, 30.
In the second embodiment, the cap 50 is omitted. In this case, for example, a water film is formed through the guide flange 6e by supplying rectified beam-like water discharge from the axial direction to the top 61a of the flow path forming shaft 61 of the second embodiment. Can do.
Use the water film forming apparatuses 3 and 30 upside down from the above embodiment.

(Other technical ideas)
The technical idea which is grasped from the embodiment and the modified examples but is not described in the scope of claims is as follows.

  (A) The cap is loosely fitted to the tip of the nozzle via a support, and water sprayed from the tip of the nozzle is directed toward the concave curved surface between the support and the inner peripheral surface of the cap. The water film forming apparatus according to claim 3, wherein a reversing guide surface for reversing is formed.

(B) The water film formation according to claim 2, wherein a tip of the flow path forming shaft is formed by a closed top, and a supply port through which water is supplied to the top is formed in the cap. apparatus.
(C) An annular channel is formed between the inner surface of the cap and the outer periphery of the nozzle, and the opening formed at the tip of the annular channel has an opening area smaller than the cross-sectional area of the upper annular channel. The water film forming apparatus according to the item (A) or the item (B), wherein the water film is narrowed so that

  (D) The upper end of a pole erected on the ground surface of the water film forming apparatus according to any one of claims 1 to 3 and the other technical ideas (A) to (C). A hydrophilic device characterized by being supported by

  (E) The technical idea (D) is characterized in that the water film forming device is suspended from a beam portion extending in a lateral direction from an upper end of a hollow tubular pole erected on the ground surface. The hydrophilic device as described.

Sectional drawing which shows typically the fountain apparatus supported by the pole of 1st Embodiment of this invention. FIG. 2 is a detailed view of part A in FIG. 1. BB arrow sectional drawing in FIG. The schematic diagram which shows the hydrophilic apparatus of 1st Embodiment of this invention. Sectional drawing which shows typically the fountain apparatus of 2nd Embodiment of this invention. The schematic diagram which shows the hydrophilic apparatus of 2nd Embodiment of this invention. Sectional drawing which shows 3rd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Hydrophilic apparatus, 2 ... Water film, 3,30 ... Water film formation apparatus, 4,40 ... Pole, 5,50 ... Cap, 6,60 ... Guide body, 6a ... Concave curved surface, 6b ... Convex curved surface, 6d ... Water discharge nozzle, 6e ... guide flange, 7 ... water discharge port, 8 ... annular flow path, 9 ... outer peripheral edge, 10, 70 ... support, 61 ... flow path forming shaft.

Claims (3)

A guide flange is integrally formed on the outer periphery of the flow path forming shaft that forms the annular flow path,
A concave curved surface is formed at a boundary portion between the guide flange and the flow path forming shaft, and a convex curved surface is continued to the concave curved surface via a curved surface on the outer peripheral side of the guide flange,
A water film forming apparatus characterized in that water from the annular flow channel is discharged in a film shape from the periphery of the convex curved surface through the concave curved surface. The water film forming apparatus according to claim 1, wherein a cap for forming an annular flow path in cooperation with the flow path forming shaft is loosely fitted to a distal end portion of the flow path forming shaft. The water film forming apparatus according to claim 1, wherein the flow path forming shaft is formed by a water discharge nozzle.

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